EZWatch EZ-TRACK-DOME - Manual (Page 17)

Connecting Multiple P/T/Z cameras to a single joystick/DVR :
Daisy Chain Communication :
Run a cable from the RS485 +/- ports on the joystick to the corresponding wires on the
first camera. Then run a cable from the RS485 +/- wires on the first camera to the second,
and from the second to the third, etc. This is ideal for cameras that are spaced close
together to each other, but may be far away from the joystick individually.
Star Communication :
Run a cable individually from the RS485 + / - ports on the joystick to the corresponding
wire on each of the cameras. This is ideal for cameras that are placed far apart from one
another but are near the joystick.
RS485 +
RS485 -
RS485 +
RS485 -